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ZXSDR BS8900 Hardware Manual
Table 7
describes the module configured in RF subrack slots.
T
ABLE
7 RF S
UBRACK
M
ODULE
D
ESCRIPTION
Module
Meaning
Quan-
tity
Description
RSU
Radio System
Unit
1~6
A single RSU supports 4
carriers. RSU number is the
same with sector number if
the carrier number <=4 and
twice the sector number if 4 <
carrier number <=6.
Lightning Filter (Optional)
The lightning filter locates in the RF cabinet below RSU, an option
configuration.
The lightning filter consists of 2 DC lightning protection units
(LPUs), 1 air break switch (ABS) and 2 DC filters.
Figure 12
shows
its structure.
F
IGURE
12 L
IGHTNING
F
ILTER
S
TRUCTURE
Note:
1. Lightning filter needs to be configured when one RF cabinet is
installed alone or with a storage battery cabinet in heap or with
another RF cabinet in heap.
2. Lightning filter is unnecessary when one RF cabinet is installed
with a baseband power cabinet in heap.
12
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